I still feel this show could have ended with S4. Would have been FLAWLESS. Later seasons still have some great moments though + the core cast continue to carry the show, even with it's decline in quality.
I love this and its characters faaar more than I think it was actually good, especially that entire back half of the show.
When it was a strict satire during that first half of S1 it was at its most avant-garde, but the emotions and characters worked well very far into the show and touched me up until the end. It regained strength with S4, its second best season, and S3 was good.